1. Figures and descriptions on Canadian organic remains Author/Creator: Geological Survey of Canada Publication/Creation: Montreal : Printed by J. Lovell, 1858-65. Resource Type: Book Access & Availability: Loading
2. Fossils from the Ordovician bioherm at Meiklejohn Peak, Nevada Author/Creator: Ross, Reuben James, 1918- Publication/Creation: Washington : U.S. Govt. Print. Off, 1972 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 685-688. Access & Availability: Loading
3. Fossils in Ordovician tuffs, northeastern Maine Author/Creator: Neuman, Robert B., 1920- Publication/Creation: Washington : U.S. Govt. Print. Off, 1964 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1181 A-J. Access & Availability: Loading